Schwalbe

Thank gr5 for your fast and detailled answer, you really helped me a lot! I did not dare to print again since the problem occured, awaiting the comunity's opignion. I was thinking that this issue was way more serious (I knew that the printer was strong and well build, but it's an incredibly precise machine, I tought that this incident would have critically affected the mecanism...). It's good to know that those parts (the feeder and print head) can be moved manually when powered I will try to find out what's going on with those switches (thanks for telling me the critical places) All your tips are really helpful (I will check every point you mentionned, but the struggle seems to come from the switches). it's good to see that we're not all alone with this - complex- product

Hi everyone, I've bought an Ultimaker 2 one month ago (it's my first 3d printer, so i'm quite unexperieced in this field) and went through several extrusion problems since then. But despite this, I've managed to print without too many issues, reading all the topics avaliable on the internet. However, today my printer had a more serious issue; I wanted to unload the loaded PLA filament using the "moving material" function, but the feeder stopped half way of the bowden tube and the printer's screen showed somehing like: "ERROR - STOPPED X or Y switch struck Contact: support@ultimaker.com" I did knew that this message would occur because I had this problem quite often, but it wasn't a real struggle since I just had to power it off and then on to get rid of it. So I did like I did every time before: I powered the UM2 off, waited a few seconds, and then powered it on. The printer's head was still in "moving material" position when i powered it on (half way of the X axis, home position of the Y axis). The material was still blocked half way of the bowden tube so I decided to do the operation once again. When I clicked on "moving material", the head (which was still in the position I described previously) began to go to slowly the right hand corner. I let it go thinking that it was a normal pattern, but I quickly noticed that someting was wrong; when the head reached the right hand corner, the motor didn't stopped at all and the head was still willing to go to the right, causing the head to be stongly crushed against the right lateral metal bar and the X motor to slip on his belt making an awfull noise. I powererd the machine off as quickly a I could to prevent any further damage. The head was still in the right hand corner, so I switched on the UM2 and selected "Home Head". The head went in home position fine but I noticed that he motors were hot (60°-70° I guess). I guess that the pinter didn't knew that the head was already in middle position and tried to achieve the same pattern to the right, from the middle position, as it would have done from the home head position. The rubber belts didn't seems to be damaged and the head still looks the same, but I don't know if it is a major issue causing to change parts (or event sending the printer back), or just a annoying but harmless problem on this machine. If some of you already had this problem or know a bit about it, I would be glad to read your answer (sorry for the mistakes or unappropiate words in this text, english isn't my native language) Schwalbe